Taurus revolvers big and small

As for the 3 Taurus that has been shown above i would have to say with just looking at them i would have to go with the first one that was shown. please someone explain the diffrence between the 3 handguns

these as with any revolvers come in many calibers and barrel length.The longer the barrel the easier to hit real accuritely.The first one is what is referred too as a snub nose or snubby.A good choice for ccw due to small barrel length.This like any come in selection of caliber.The most popular is the .38.It is a good weapon especially with advances in ammo manufacturing.It is and has been a mainstay of detectives nationwide as primary and backup.They seem hard to shoot for newbies due to short sight radious-but that is also proven wrong with proper training and good basic shooting skills.With an exposed hammer like these you have the SA/DA ability.Cock the hammer and trigger pull is light.I like them for the history they have,simplicity of design and ease of concealment.
The other 2 are the same basic pistol with longer barrels.The larger revolvers also seem to have a wider range of caliber choice.The longer barrel seems to be able to hit more accuritely due to longer sight radious.But the snub nose can be just as accurite.
Dont totally dismiss revolvers as they are fine pistols.Over a lifetime I have had a number of these and always enjoyed them.They are a great self defense weapon.5or 6 rounds of .38 into an attacker will get good results if they are in the proper spot.